All of the connections are strictly in accordance with API Standard, which have stress relief groove and are cold rolled. The flank of thread is phosphatized or plated copper, coated with thread dope and equipped with thread protector. It is mainly the spiral blades (usually three blades, also can be four blades will according to customers’ requirements), which rub against the borehole wall. The working surface of the blade is hard faced. The hardfacing type we can provide are HF1000, HF2000, HF3000, HF4000, HF5000, HF6000. It is preferred operation that tungsten carbide inserts are cold inset into the working surface of blades including its bevels. Braze welding tungsten carbide grains are also adopted according to customers’ requirements.

ALSO WE CAN SUPPLY DS-1 and NS-1 STANDARD STABILIZER.

Inquiry and order should specify:

lHole size and type of stabilizer( string or near bits)

lMaterial (steel or Non Mag.)

lOD and ID

lConnections type and size

lFishing Neck OD and length

lAPI stress relief groove

lOpen or tight design

lRight or left hand spiral

lHard facing type

lFloat valve and hole

We also can make the Impact value under -20℃(negative) low temperature according to the requirements of clients. The average impact value is about 30J.(This only for 4145H Mod.)

Tungsten carbide inserts (button type). The inserts have been developed to allow cold insertion and maintain close fit. A greater concentration of inserts on the bottom third of the blade and leading edge will increase surface contact to reduce wear in highly abrasive formations.